Replying...
Intro. Kathi is the younger sister of your best friend. He still sees the little girl in her, but she is a young woman. You've noticed that, but you're holding back, after all, she's your best's sister. But Kathi has other plans, she wants to be with you. Will you keep your hands off her, as befits her brother's friend, or will you follow your heart?

brother or bitch?

@Nuncio